[Benson]

I got this story second hand so I do not have all the details.

As I remember it happened sometime ago with a California builder.

1. Recently rebuilt engine was stopping when it warmed up and would not turn over until it cooled.

2. The engine was returned to the rebuilder.

3. The response was that the pistons were expanding and stopping the engine from turning until it cooled off.

4. The builder said that he had bought a large number of these pistons and that the pistons were made from a defective alloy and that they expanded too fast and too much compared to normal pistons so they got stuck in the bores.

It might be something to consider in this problem.

Maybe there are still some of these pistons being sold at flea markets.